Unitable with postgreSQL (v17)

Unitable with postgreSQL (v17)

I'm using TUniTable with postgreSQL v17.
When I open semi large table (140 000 rows, 220 fields) with unitable it takes 3-4 secods.
is there any way to avoid this delay, like take just first record etc

unidac is latest 10.

Server version: PostgreSQL 17.0 on x86_64-windows, compiled by msvc-19.41.34120, 64-bit
Client version: 8.0 Direct

This is important for me since i'm converting large app to postegresql which has previously used tTable descant tables which are opened very fast.